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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2021-6-37-43</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1912</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭЛЕКТРОМАГНИТНЫЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTROMAGNETIC MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Основы построения мостов переменного тока с фазовым регулированием</article-title><trans-title-group xml:lang="en"><trans-title>Basis of the phase controlled AC bridges</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сурду</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Surdu</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Михайлович Сурду</p><p>Киев</p></bio><bio xml:lang="en"><p>Dmytro М. Surdu</p><p>Kiev</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сурду</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Surdu</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Николаевич Сурду</p><p>Киев</p></bio><bio xml:lang="en"><p>Michael N. Surdu</p><p>Kiev</p></bio><email xlink:type="simple">Michaelsurdu1941@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Kray Technologies Inc.</institution><country>Украина</country></aff><aff xml:lang="en"><institution>Kray Technologies Inc.</institution><country>Ukraine</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Академия метрологии Украины</institution><country>Украина</country></aff><aff xml:lang="en"><institution>Academy of Metrology of Ukraine</institution><country>Ukraine</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>04</day><month>08</month><year>2023</year></pub-date><volume>0</volume><issue>6</issue><fpage>37</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/1912">https://www.izmt.ru/jour/article/view/1912</self-uri><abstract><p>Приведён обзор мостов переменного тока. Рассмотрена проблема отсутствия высокоточных малогабаритных мостов переменного тока. Предложен метод построения мостов переменного тока, в которых уравновешивание в широком диапазоне измерения производится регулировкой только фаз совокупности кардинальных сигналов уравновешивания. Определены оптимальная структура и алгоритмы управления кардинальными сигналами в процессе уравновешивания моста. Показано, что применение предложенного метода построения мостов позволяет создать малогабаритные прецизионные измерительные приборы, а также полностью интегрированные устройства для прецизионного измерения параметров импеданса. Описаны универсальные мосты переменного тока с фазовым регулированием, алгоритмы их уравновешивания и калибровки.</p></abstract><trans-abstract xml:lang="en"><p>This work describes the new approach to the improving of the accuracy of the bridge impedance measurements. By this approach the bridge balance in wide impedance range uses the control of the phases of the aggregate of the cardinal signals only. The optimal structure and algorithm of the control of this aggregate of the cardinal signals is determined. Using this approach accurate impedance meters with low size and price could be developed. In the limit, this approach gets us possibility to develop fully integrated impedance meters. Report shortly describes universal impedance meters with phase control, their balance and calibration algorithms.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>измерение</kwd><kwd>импеданс</kwd><kwd>фазовое регулирование</kwd><kwd>калибровка</kwd><kwd>неопределённость</kwd><kwd>коэффициент передачи</kwd></kwd-group><kwd-group xml:lang="en"><kwd>measurement</kwd><kwd>impedance</kwd><kwd>phase control</kwd><kwd>uncertainty</kwd><kwd>transfer coefficient</kwd><kwd>calibration</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Hague B., Alternating current bridge methods, revised by T. R. Foord, 6th edition, Boston, MA, Pitman, 1971, 309 p.</mixed-citation><mixed-citation xml:lang="en">Hague B., Alternating current bridge methods, revised by T. R. 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